Did you try cleaning out the burner? I used to get spider "houses" in my pop up fridge burner that would keep it from lighting. Sometimes just hitting it with the vacuum would do the trick.
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2015 Voltage 3305, Gone for Good !
2014 Ram 3500 dually, Aisin, Gone but not Forgotten.
2018 Winnebago Sunstar 32YE
would have to se the fridge, but on mine on the inside of the camper there is a black access panel, remove that panel and there is a reset button, that fixed me up